Multiple magazine for cartoning machine



June 23, 1964 B. JOHNSON ETAL 3,137,981

MULTIPLE MAGAZINE FOR CARTONING MACHINE Filed Jan. 16, 1961 4Sheets-Sheet 1 E K) F y ATTORNEYS.

June 23, 1964 JOHNSON ETAL 3,137,981

MULTIPLE MAGAZINE FOR CARTONING MACHINE Filed Jan. 16, 1961 4Sheets-Sheet 2 V INVENTORS:

L my Z 05% B) w'g Q/zMa n 9%m ATTORNEYS.

June 23, 1964' B. JOHNSON ETAL 3,137,981

MULTIPLE MAGAZINE FOR CARTONING MACHINE Filed Jan. 16, 1961 4Sheets-Sheet 3 J? ZZZ W y? fl mu'aw,

Br 9/9/M ATTORNEYS.

June 23, 1964- B. JOHNSON ETAL 3,137,981

( MULTIPLE MAGAZINE FOR CARTONING MACHINE ,Filed Jan. 16, 1961 4Sheets-Sheet 4 V Z w W 02 5? BY W ATTORNEYS.

United States Patent poration of Indiana Filed Jan. 16, 1961, Ser. No.82,840 12 Claims. (Cl. 53168) This invention relates to a multiplemagazine arrangement for a cartoning machine such as one of the typeshown in Patent No. 2,999,344.

One object of the invention is to provide at least two magazines whichmay contain different types of cartons, and which are movably mounted onthe cartoning machine so that the cartons from either magazine can beselectively introduced to the cartoning machine as desired at the willof the operator. The cartoning machine such as shown in the co-pendingapplication referred to may for instance be designed for cartoningbacon. Slabs of bacon are successively sliced and each slab produces twogrades of bacon, some of the end slices being second grade as comparedto the majority of slices between the end slices being first grade. Itis desirable to package these different grades in different cartons andone way of doing it is to have a single magazine for cartons, loadedwith first grade cartons and lay aside the second grade bacon until aconsiderable quantity has been accumulated, then load the magazine withsecond grade cartons and run through the accumulated batch. On the otherhand, it would be desirable to accumulate only a few cartons of secondgrade bacon and have a quickly operable selective means for packagingonly a few quantities of bacon in the second grade cartons and thenswitch back to first grade cartons.

The primary object of our present invention is to provide a multiplemagazine for this purpose, together with a quickly operable selectivemeans to switch from one magazine to the other while the machine is inoperation without sacrificing more than approximately one cycle ofoperating time for the switching operation.

Another object is to provide at least a pair of magazines movablymounted on a cartoning machine so that either magazine may be moved to aposition over carton removing means of the machine.

Still another object is to provide automatic mechanism for moving bothmagazines bodily with respect to the cartoning machine so that eithermagazine as desired is in position over the carton removing means whichremoves the cartons from the bottom of the stack of cartons one at atime and feeds them to the conveyor of the cartoning machine.

A further object is to provide such automatic means primarily underselective control of the operator and secondarily timed in relation tothe cycles of operation of the cartoning machine so that magazineswitching operation can be accomplished at an appropriate time duringthe cycle of operation of the machine.

Still a further object is to provide pneumatic means for shifting themagazines and an electric control circuit therefor in which theswitching operation is initiated by a foot switch or the like, and thenautomatically performed and completed as to the cycle of switchingoperation whereupon the cartoning machine is restarted, having beenstopped for the magazine switching operation.

An additional object is to provide a safety interlock arrangement in thecircuit to prevent malfunctioning in the case of binding or jamming ofthe magazine shifting mechanism.

With these and other objects in view, our invention conists in theconstruction, arrangement and combination of the various parts of ourmultiple magazine for car- 3,137,981 Patented June 23, 1964 toningmachine whereby the objects above contemplated are attained, ashereinafter more fully set forth, pointed out in our claims andillustrated in detail on the accompanying drawing wherein:

FIG. 1 is a perspective view of the type at cartoning machine shown inthe co-pending application above referred to with our presentlydisclosed multiple magazine arrangement mounted thereon, our arrangementbeing illustrated by shaded lines to distinguish it from the machine ingeneral shown in lighter and unshaded lines.

FIG. 2 is an end view of the left-end of FIG. 1 on an enlarged scale.

FIG. 3 is a side elevation of our multiple magazine and associated partsof the cartoning machine as viewed from the left side of FIG. 2 and thenear side in FIG. 1.

FIG. 3 is a vertical sectional view on the line Fi -3 of FIG. 3 showingonly the magazine and supporting means therefor.

FIG. 4 is a plan view of a portion of FIG. 3 to show the pneumaticcylinder for our magazine switching operation.

FIG. 5 is a diagrammatic View of the electric circuit and associatedcomponents for controlling our magazine shifting mechanism; and

FIG. 6 is a diagrammatic view of the pneumatic magazine shiftingmechanism and solenoid control valve therefor.

On the accompanying drawings we have used the reference numerals l0 and12 to indicate respectively front and rear supporting legs for acartoning machine. Longitudinal channels 14 and 16 shown in FIG. 2 formpart of the framework of the machine and serve to support our multiplemagazine as will hereinafter appear. As more fully disclosed in theco-pending application the machine includes conveyor chain sprockets 18and conveyor chains 29 for conveying erected cartons such as shown at Cin FIG. 1 past a product shelf 22 on which product such as pounds ofsliced bacon may be deposited from a slicing machine and manipulated byan operator to insert them into the erected cartons C as they pass theshelf 22.

Our present invention involves the use of two magazines identified as Mand M and as shown in FIGS. 1 and 3 the magazine M is over a cartonextracting mechanism of the type shown in the co-pending application andwhich will now be described briefly as to its features pertinent to anunderstanding of our invention. A plurality of vacuum cups 24 aremounted on supporting bars 26 and connected by hoses 28 to a manifold 29which, in turn, is connected to a vacuum valve 31. A vacuum pump hose 30extends from a Vacuum pump (not shown) to the valve 31. The supportingarm 32 is pivoted to upper and lower parallelogram links 34 and 36which, in turn, are pivoted at 38 and 40 to the frame of the cartoningmachine. The links 34 and 36 are oscillated through arcs by a cam 42engaging a roller 44 on the link 315, the roller being held inengagement with the cam by a spring 46 connected to the link 34 at oneend and anchored at its other end to the frame of the machine as at 48.

The vacuum valve 31 is biased to open position, a pivoted lever 50 beingprovided to close it by depression of the lever as to the position shownin FIG. 3 by an adjustable projection 52 on the supporting arm 32. Thevacuum valve is open during the major portion of the oscillation of thelinks 34 and 36 from their lowermost position.

The magazines M and M at the front or in-feed end of the cartoningmachine (left hand end in FIG. 1) are for collapsed cartons C and C Cbeing the cartons for first grade bacon and C the cartons for secondgrade the cartons in vertical stacks as illustrated in FIG. 1 and permitfeeding of the cartons one at a time from the bottom of whichever stackis over the vacuum cups 24 (the stack of cartons C in FIGS. 1 and 3).The uprights 54 and 56 are suitably supported rigidly on the frame ofthe cartoning machine as will hereafter appear and at their lower endsthey are provided with stop screws 58 forming rounded projections forsupporting the edges of the cartons. It is obvious, however, that if thebottom-most carton is bowed downwardly it will be withdrawn fromsupported position on the projections 58. The magazines, as justdescribed, are comparable in construction to the single (2) magazinedisclosed in the Clanin and Hansen application.

We will now describe our mounting means for the two magazines M and Mwhereby they may be selectively positioned over the vacuum cups 24, andthe mechanism and control means for accomplishing the selection asdesired. Four brackets 60 are secured to the channels 14 and 16 by bolts62. Each bracket has a pair of hubs whereby the two brackets on thechannel 14 may rigidly support a pair of horizontal rods 64. Likewise,the two brackets 60 on the channel 16 rigidly support a pair ofhorizontal rods 66. The four rods 64 and 66 have rubber stop or bumperwashers 67 and 69 thereon, four of the washers 67 adjacent the rearbrackets 6-9 (see FIG. 3), and four of the washers 69 adjacent the frontbrackets 60. Four hub-like brackets 68 are slidable on the pair of rods64 and four similar hub-like brackets 78 are slidable on the pair ofrods 66. The brackets 68 as shown in FIG. 3 are adapted for supportingthe right-hand sides of the magazines M and M in FIG. 2, while thebrackets 70 are adapted to support the left-hand sides of the magazines.As shown in FIGS. 1, 2 and 3 the support includes upper longitudinallyextending bars 72 and lower longitudinally extending bars 74 with whichsuitable rods and bars are connected, and in turn are connected to theuprights 54 and 56 as disclosed, the arrangement being such that themagazines are adjustable for difierent lengths and widths of collapsedcartons C and C Since these connections form no part of our presentinvention, we will not include a detailed description thereof.

The magazines M and M are shown in the rearward position in FIGS. 1 and3 with the magazine M over the vacuum cups 24. They may he slidforwardly on the rods 64 and 66 so that magazine M instead is over thevacuum cups. The mechanism for accomplishing such sliding motionconsists of a cross rod 76 adjacent to forward ends of the bars 74 (seeFIG. 4), a pneumatic cylinder 78 supported on a mounting bracket 80,which is secured to the channel 16, a piston 82 in the cylinder andconnected to a piston rod 84 extending from the righthand end of thecylinder 78. The extending piston rod is operatively connected to thecross rod 76 by a connector 86.

A main shaft 100 (see FIG. 3) is rotated once per cycle of operation ofthe cartoning machine by the conveyor motor CM. The conveyor chain 20 isdriven in synchronism with the main shaft 100 by a chain 102 and otheroperative connections (not here shown but disclosed in said Clanin andHansen application). A cam 101 is mounted on the main shaft 100 foroperating a cycling switch CS as shown in FIG. 5.

Referring to FIG. 6 a solenoid valve SV is provided for controlling thesupply of compressed air to opposite ends of the cylinder 78. Acompressed air supply 88 is shown extending to the valve SV and from thevalve are air connections 90 and 92 to the front end and rear endrespectively of the cylinder 7 8. 94 is an exhaust port from the valve.The solenoid coils are indicated L and R (for left and rightrespectively as will hereinafter appear), and solenoid plungers thatenter the solenoid coils are shown diagrammatically at 96 and 98respectively.

The basic electric circuit for controlling the solenoid coils L and R,as well as certain significant components of the cartoning machine isshown in FIG. 5. The current supply is through lines L and L and normalcircuit control elements for a conveyor motor CM consists of a STOPswitch, a START switch, a holding relay HR having normally open contactsforming a holding switch HS. We have added the following elements to thebasic circuit just described:

(1) a re-start switch RS shunting the START switch (2) a conveyor stopswitch CSS (normally closed) in the circuit of the conveyor motor CM (3)an interlock switch (right) ISR for the solenoid coil R and an interlockswitch (left) ISL for the solenoid coil L which switches are normallyopen and shunt each other, and are connected in the circuit of the motorCM. They are alternately closed by the magazines reaching their oppositelimits of movement (4) a foot switch FS which is normally open and maybe closed by stepping thereon. This switch is conveniently located foroperation at will by the operator of the machine, for instance, at theposition shown in FIG. 1 near the leg 12 (5) a cycle switch CS to insureoperation of our magazine switching mechanism only at the proper time inthe cycle of operation of the cartoning machine. The cycle switch CS isnormally open, and closed momentarily throughout a few degrees ofrotation of the main shaft 160 by cooperation of the cam 101 with theswitch CS (6) a step down transformer T for supplying low voltagecuirent to the solenoid coils L and R. The transformer T and the footswitch FS and cycle switch CS are connected in series across the line LL so that FS and CS energize the transformer T only when both are closed(7) a direction switch (left) DSL and a direction switch (right) DSR inthe circuits for the solenoid coils L and R respectively. The switchesDSL and DSR are mechanically connected to the switches ISL and ISR forsimultaneous opening in one position or closing in the oppositeposition. All four switches are normally open when the magazines areshifting from one position to the other but at the end of the shift theappropriate pair of switches is closed, such as the switches DSR and ISRin FIG. 3 due to a switch actuating screw 104 on the lower front bracket68 striking the control button of the switch. For the switches DSL andISL a similar stop switch actuating screw 106 is provided on the lowerrear bracket 68.

, (8) a conveyor stop relay CSR energized in parallel with thetransformer T, and when energized operable to open the normallyclosedconveyor stop switch CSS.

(9) a timing relay start switch TRSS which is normally open and isclosed by energization of the relay CSR (10) a timing relay holdingswitch TRHS which is normally open and shunts the switch TRSS (11) atiming relay time switch TRTS which is normally closed (12) a timingrelay TR which is in circuit with the switches TRHS and TRTS across theline 1 -1 The switch TRHS is immediately closed whenever TR is energizedwhereas the timing relay TR has timing mechanism TM which at the end ofa timing period momentarily opens and then closes the switch TRTS andsimultaneous- 1y momentarily closes and then reopens the re-start switchRS.

After the cartoning machine magazines have been adjusted to the desiredsize of carton, they are loaded with cartons, C for first grade baconand C for second grade bacon, the machine may be started by depressingthe START switch shown in FIG. 5 to establish the circuit through theconveyor motor CM. Energization of the motor CM will rotate the mainshaft once each cycle of operation of the machine and the conveyor chain20 will slowly advance while the vacuum cups 24 will alternately raiseand lower once each cycle of operation. The vacuum cups contact thelowermost carton C resting on the projections 58 of the magazine M andsince vacuum is applied to the cups by opening of the valve 31, soonafter they leave their lowermost position the cups are supplied withvacuum to grip the lower surface of the carton for the purpose ofpulling it downwardly when the cups again move downwardly. In movingdownwardly the carton moves with the cups and is pulled off the projections 58 and partially erected as shown in the Clanin and Hansenapplication, being fully erected by the time they reach the position ofthe carton C in FIG. 1 which is the loading station at which a pound ofsliced bacon may be inserted by the operator into the erected carton.The carton at this point has its upper panel bowed upwardly tofacilitate such insertion. The carton then moves on through the machineand its ends are closed as disclosed in the application referred to.

When it is desired to switch from cartoning first grade bacon tocartoning a batch of second grade bacon, the operator (while the machineis still running) steps on the foot switch FS. At that particular timethe cycle switch CS may not be in closed position and accordingly theoperator maintains his foot on the switch PS until CS does close andthereby the solenoid coil R is energized because of energization of thetransformer T and the switch DSR being closedwhereas the switch DSL isopen.

The operator may then release the foot switch FS which will break thecircuit of the transformer T and thereby de-energize the solenoid coil Rbut by that time the solenoid valve has been shifted from the positionshown in FIG. 6 to the opposite position (toward the right) for sendingair from 88 through 92 and exhausting it from 90 through 4. Accordingly,the piston 82 will shift toward the right and carry with it themagazines M and M and continue for a full stroke until the four rearwardbrackets 68 strike front bumper washers 69 and the magazine assemblywill be held in that position by continued air pressure on the left sideof the piston 82 in FIG. 6.

At the time the transformer T is energized the conveyor stop relay CSRis also energized as it is in parallel with the transformer T. Thisopens the conveyor stop switch CSS so that the conveyor motor CM isde-energized, thus stopping the normal operation of the cartoningmachine while the magazine-shift operation is taking place. The conveyorstop relay CSR when energized also closes the timing relay start switchTRSS thus energizing the timing relay TR which thereupon immediatelycloses the timing relay holding switch TRI-IS to keep the timing relayin operation after the timing relay start switch TRSS is opened byde-energization of the conveyor stop relay CSR (energized onlymomentarily by the cycle switch CS). The conveyor stop switch CSS canreclose at this time, however, since the holding switch HS has beenopened by de-energization of the holding relay HR when CSS was openedthus insuring that the circuit for the conveyor motor CM will remainopen until reclosed by the restart switch RS.

The timing mechanism TM is adjustably set for the time it requires forshift of the magazine assembly from one position to the other to insurefull shift (usually two to three seconds) and when the time runs out thetiming mechanism TM opens the timing relay timed switch TRTS tode-energize the timing relay TR and reset it for the next operation, andcloses the restart switch RS to automatically re-energize the conveyormotor circuit without the operator having to depress the START switch.The switch TRTS recloses and the switch RS reopens by the timingmechanism TM timing out after the holding switch HS has closed. The twoswitches TRTS and RS are thereby reset for the next magazine shiftingoperation.

The momentary closing of the cycle switch CS obvi ously will energizeeither the solenoid coil R or the solenoid coil L depending on which ofthe switches DSR or DSL is closed. The opposite limits of travel of themagazine assembly may be considered home positions and only one of theswitches DSL or DSR is closed at either of the home positions, bothbeing open during the movement of the magazines from one position 6 tothe other. This switching arrangement reverses the solenoid valve SV toactuate the piston 82 in the proper direction. The interlock switchesISR and ISL being mechanically connected to the direction switches DSRand DSL operate in the same manner with both switches open when themagazine is off home position.

The timing mechanism TM of the timing relay TR is set at approximatelytwo to three second to allow enough time for the magazines to move fromone home position to the other home position. If for any reason such asbinding or jamming of the magazine shifting mechanism so that it doesnot reach either home position the interlock switches ISL and ISR serveas safety switches to keep the conveyor motor CM deenergized until thetrouble is remedied and thereupon automatic operation will be resumed tocomplete the movement to the selected home position after which thecartoning machine will start operating again and continue to do so untilthe foot switch FS is again depressed for switching to the other stackof cartons.

From the foregoing specification it will be obvious that we haveprovided a multiple magazine arrangement for a cartoning machine whichremoves collapsed cartons one at a time from either magazine, and areadily operable means for automatically accomplishing all operationsnecessary for the shift from one style of carton to the other by themere closing of a foot switch for part of a cycle of operation of themachine. The only further requirement is that the foot switch be helddepressed until the cycle switch CS closes which will start the movementof the magazines and as soon as they are observed in motion the footswitch can be released. During the shifting of the magazines thecartoning machine is stopped so that the vacuum cups 24 do not attemptto remove cartons while the magazines are being shifted and so thatthere are no empty pockets on the conveyor chain 20. Thus, there isminimum interference with the operation of the cartoning machine andlikewise of the magazine shifting mechanism. In the electric circuitprovision has been made for assuring completion of a magazine shiftingoperation once it is started and also provisions for guarding againstany malfunctioning in case the magazines bind or jam before reachinghome position.

While we have shown and described a twin magazine arrangement, it isobvious that a similar arrangement with three or more magazines could bedesigned, operated and controlled in a manner similar to our disclosurewithout departing from the spirit of our invention.

Some changes may be made in the construction and arrangement of theparts of our twin magazine arrangement without departing from the realspirit and purpose of our invention, and it is our intention to cover byour claims any modified forms of structure or use of mechanicalequivalents which may reasonably be included within their scope.

We claim as our invention:

1. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a multiple magazine assembly movablymounted on the cartoning machine and adapted for any one of itsmagazines to selectively coact one at a time with said withdrawingmeans, manually controlled means for automatically moving said magazineassembly to a position of coaction between a desired magazine and saidwithdrawing means, said manually controlled means being operable whilethe cartoning machine is in operation for effecting stoppage of thecartoning machine at a predetermined position in its operating cycleduring the magazine assembly moving operation, and means operable by thecompletion of the magazine assembly moving operation to effectcontinuance of operation of the cartoning machine.

2. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a multiple magazine assembly movablymounted on the cartoning machine and adapted forany one of its magazinesto coact one at a time with said withdrawing means, and selectivelyoperable means for automatically moving said magazine assembly to aposition of coaction between a desired magazine and said withdrawingmeans, for stopping the cartoning machine at a predetermined point inits cycle of operation and for starting it again when said desiredmagazine assumes its position of coaction with said withdrawing means.

3. For use with a cartoning machine having means for withdrawing cartonone at a time from a magazine, a multiple magazine assembly movablymounted on the cartoning machine and adapted for any one of itsmagazines to selectively coact one at a time with said withdrawingmeans, pneumatic means for moving said magazine assembly to a positionof coaction between a desired magazine and said withdrawing means, andmanually controlled means for actuating said pneumatic means, saidmanually controlled means effecting stoppage of the cartoning machine ata predetermined point in its cycle of operation during the magazineassembly moving operation and restarting the cartoning machine at thecompletion of said magazine assembly moving operation.

4. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a two-position, twin magazine assemblymovably mounted on the cartoning machine and adapted for either of itsmagazines to selectively coact one at a time with said withdrawingmeans, pneumatic means for moving said magazine assembly to a positionof coaction between either magazine and said withdrawing means, and footoperated means for actuating said pneumatic means, said foot operatedmeans automatically moving the non-coacting magazine to coactingposition and effecting stoppage of the cartoning machine at apredetermined point in its cycle of operation during the magazineassembly moving operation and restarting the cartoning machine at thecompletion of said magazine assembly moving operation.

5. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a two-position, twin magazine assemblymovably mounted on the cartoning machine and adapted for either of itsmagazines to selectively coact one at a time with said withdrawingmeans, pneumatic means for moving said magazine assembly to a positionof coaction between a non-coacting magazine and said withdrawing means,a solenoid valve for controlling said pneumatic means, a circuit forsaid solenoid valve, a manual switch for controlling said circuit andthereby said solenoid valve and said pneumatic means, a cycling switchalso controlling said circuit to delay operation of said solenoid valveand thereby said pneumatic means until a predetermined point in theoperating cycle of said cartoning machine is reached, and meansresponsive to said manual and cycling switches for effecting stoppage ofthe cartoning machine during the magazine assembly moving operation.

6. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a twin magazine assembly movably mountedon the cartoning machine and adapted for either of its magazines toselectively coact one at a time with said withdrawing means, pneumaticmeans for moving said magazine assembly to a position of coactionbetween a desired magazine and said withdrawing means, a solenoid valvefor controlling said pneumatic means, a circuit for said solenoid valve,a foot switch and a cycling switch in series with each other in saidcircuit for controlling the circuit and thereby said solenoid valve andsaid pneumatic means, said circuit effecting stoppage of the cartoningmachine during the magazine assembly moving operation.

7. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine, a two-position, twin magazine assemblymovably mounted on the cartoning machine and adapted for either of itsmagazines to selectively coact one at a time with said withdrawingmeans, pneumatic means for moving said magazine assembly to oppositepositions where one or the other of said magazines coacts with saidwithdrawing means, and manually controlled means for actuating saidpneumatic means, said manually controlled means, when operated,automatically moving the non-coacting magazine to coacting positionrelative to said withdrawing means and also effecting stoppage of thecartoning machine at only one point in its cycle of operation during themagazine assembly moving operation.

8. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine and conveying them, a twin magazineassembly movably mounted on the cartoning machine and adapted for eitherof its magazines to selectively coact one at a time with saidwithdrawing means, pneumatic means for moving said magazine assembly, asolenoid valve for controlling the direction of travel of said pneumaticmeans and having two solenoids, a normally open direction switch incircuit with each of said solenoids, one of said direction switchesbeing closed by said pneumatic means at on limit of its movement and theother thereof being closed thereby at the other limit of its movement, amanual switch for energizing whichever solenoid has its direction switchclosed, a cycle switch in series with said manual switch to insureenergization of a solenoid only at a particular point in the cycle ofoperation of the cartoning machine, a conveyor stop relay to stop theconveyor motor of the cartoning machine, a timing relay energized bysaid conveyor stop relay, a timed-out restart switch actuated by saidtiming relay for re-energizing said motor, said restart switch beingclosed at the end of the timing period of said timing relay, andinterlock switches in circuit with said motor and paralleling eachother, said interlock switches being opened and closed simultaneouslywith said direction switches.

9. For use with a cartoning machine having means for withdrawing cartonsone at a time from a magazine and conveying them, a twin magazineassembly movably mounted on the cartoning machine and adapted for eitherof its magazines to selectively coact one at a time with saidwithdrawing means, pneumatic means for moving said magazine assembly, asolenoid valve for controlling the direction of travel of said pneumaticmeans and having two solenoids, a normally open direction switch incircuit with each of said solenoids, one of said direction switchesbeing closed by said pneumatic means at one limit of its movement andthe other thereof being closed thereby at the other limit of itsmovement, a manual switch for energizing whichever solenoid has itsdirection switch closed, a cycle switch in series with said manualswitch to insure energization of a solenoid only at a particular pointin the cycle of operation of the cartoning machine, a conveyor stoprelay to stop the conveyor motor of the cartoning machine, a timingrelay energized by said conveyor stop relay, and a timed-out restartswitch actuated by said timing relay for re-energizing said motor, saidrestart switch being closed at the end of the timing period of saidtiming relay.

10. For use with a cartoning machine having means for withdrawingcartons one at a time from a magazine, a two-position twin magazineassembly movably mounted on the cartoning machine and adapted for eitherof its magazines to selectively coact one at a time with saidwithdrawing means, solenoid means for controlling the direction oftravel of said magazine and having two solenoids, a normally opendirection switch in circuit with each of said solenoids, one of saiddirection switches being closed by said magazine at one limit of itsmovement and the other thereof being closed thereby at the other limitof its movement, a manual switch for energizing whichever solenoid hasits direction switch closed, a cycle switch to insure energization of asolenoid only at a particular point in the cycle of operation of thecartoning machine, and means to stop the cartoning machine at apredetermined point in its cycle of operation while said magazineassembly is being moved from one of its positions to the other and for rstarting the cartoning machine at the completion of the magazineassembly movement.

11. For use with a cartoning machine having means for withdrawingcartons one at a time from a magazine, a twin magazine assembly movablymounted on the cartoning machine and adapted for either of its magazinesto selectively coact one at a time with said withdrawing means,pneumatic means for moving said assembly, a solenoid valve forcontrolling the direction of travel of said pneumatic means and havingtwo solenoids, a normally open direction switch in circuit with each ofsaid solenoids, one of said direction switches being closed by saidpneumatic means at one limit of its movement and the other thereof beingclosed thereby at the other limit of its movement, a foot switchoperable for energizing whichever solenoid has its direction switchclosed, a cycle switch to insure energization of a solenoid only at aparticular point in the cycle of operation of the cartoning machine, aconveyor stop relay operated by said foot and cycle switches to stop theconveyor of the cartoning machine, a timing relay energized by saidconveyor stop relay, a timed-out restart switch actuated by said timingrelay for restarting said conveyor, said restart switch being closed atthe end of the timing period of said timing relay.

12. For use with a cartoning machine having means for withdrawingcartons one at a time from a magazine, a twin magazine assembly movablymounted on the cartoning machine and adapted for either of its magazinesto selectively coact one at a time with said withdrawing means,pneumatic means for moving said assembly, a solenoid valve forcontrolling the direction of travel of said pneumatic means and havingtwo solenoids, a normally open direction switch in circuit with each ofsaid solenoids, one of said direction switches being closed by saidpneumatic means at one limit of its movement and the other thereof beingclosed thereby at the other limit of its movement, a switch forenergizing whichever solenoid has its direction switch closed, aconveyor stop relay controlled by said switch to stop the conveyor ofthe cartoning machine by de-energizing the conveyor motor thereof, atiming relay energized by said conveyor stop relay, and a timed-outrestart switch actuated by said timing relay for rte-energizing saidmotor.

References Cited in the file of this patent UNITED STATES PATENTS899,671 Lebeis Sept. 29, 1908 1,208,642 Pitney Dec. 12, 1916 1,757,553Tauschek May 6, 1930 1,935,269 Jones Nov. 14, 1933 1,983,595 Burt Dec.11, 1934 2,172,519 Reeder Sept. 12, 1939 2,769,570 Adams Nov. 6, 19562,844,927 Warner July 29, 1958 2,919,830 Anderson Jan. 5, 1960 3,024,944Pierce Mar. 13, 1962

2. FOR USE WITH A CARTONING MACHINE HAVING MEANS FOR WITHDRAWING CARTONSONE AT A TIME FROM A MAGAZINE, A MULTIPLE MAGAZINE ASSEMBLY MOVABLYMOUNTED ON THE CARTONING MACHINE AND ADAPTED FOR ANY ONE OF ITSMAGAZINES TO COACT ONE AT A TIME WITH SAID WITHDRAWING MEANS, ANDSELECTIVELY OPERABLE MEANS FOR AUTOMATICALLY MOVING SAID MAGAZINEASSEMBLY TO A POSITION OF COACTION BETWEEN A DESIRED MAGAZINE AND SAIDWITHDRAWING MEANS, FOR STOPPING THE CARTONING MACHINE AT A PREDETERMINEDPOINT IN ITS CYCLE OF OPERATION AND FOR STARTING IT AGAIN WHEN SAIDDESIRED MAGAZINE ASSUMES ITS POSITION OF COACTION WITH SAID WITHDRAWINGMEANS.